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// Copyright 2015 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Flags: --harmony-sharedarraybuffer
function Module(stdlib, foreign, heap, offset) {
"use asm";
var MEM8 = new stdlib.Int8Array(heap, offset);
var MEM16 = new stdlib.Int16Array(heap, offset);
var MEM32 = new stdlib.Int32Array(heap, offset);
var MEMU8 = new stdlib.Uint8Array(heap, offset);
var MEMU16 = new stdlib.Uint16Array(heap, offset);
var MEMU32 = new stdlib.Uint32Array(heap, offset);
var exchange = stdlib.Atomics.exchange;
var fround = stdlib.Math.fround;
function exchangei8(i, x) {
i = i | 0;
x = x | 0;
return exchange(MEM8, i, x)|0;
}
function exchangei16(i, x) {
i = i | 0;
x = x | 0;
return exchange(MEM16, i, x)|0;
}
function exchangei32(i, x) {
i = i | 0;
x = x | 0;
return exchange(MEM32, i, x)|0;
}
function exchangeu8(i, x) {
i = i | 0;
x = x >>> 0;
return exchange(MEMU8, i, x)>>>0;
}
function exchangeu16(i, x) {
i = i | 0;
x = x >>> 0;
return exchange(MEMU16, i, x)>>>0;
}
function exchangeu32(i, x) {
i = i | 0;
x = x >>> 0;
return exchange(MEMU32, i, x)>>>0;
}
return {
exchangei8: exchangei8,
exchangei16: exchangei16,
exchangei32: exchangei32,
exchangeu8: exchangeu8,
exchangeu16: exchangeu16,
exchangeu32: exchangeu32,
};
}
var sab = new SharedArrayBuffer(16);
var m = Module(this, {}, sab);
function clearArray() {
var ui8 = new Uint8Array(sab);
for (var i = 0; i < sab.byteLength; ++i) {
ui8[i] = 0;
}
}
function testElementType(taConstr, f, offset) {
clearArray();
var ta = new taConstr(sab, offset);
var name = Object.prototype.toString.call(ta);
ta[0] = 0x7f;
assertEquals(0x7f, f(0, 0xf), name);
assertEquals(0xf, ta[0]);
// out of bounds
assertThrows(function() { f(-1, 0); });
assertThrows(function() { f(ta.length, 0); });
}
function testElement(m, offset) {
testElementType(Int8Array, m.exchangei8, offset);
testElementType(Int16Array, m.exchangei16, offset);
testElementType(Int32Array, m.exchangei32, offset);
testElementType(Uint8Array, m.exchangeu8, offset);
testElementType(Uint16Array, m.exchangeu16, offset);
testElementType(Uint32Array, m.exchangeu32, offset);
}
var offset = 0;
var sab = new SharedArrayBuffer(16);
var m1 = Module(this, {}, sab, offset);
testElement(m1, offset);
offset = 32;
sab = new SharedArrayBuffer(64);
var m2 = Module(this, {}, sab, offset);
testElement(m2, offset);
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